summer vacation; summer holiday
to perform; to do; to conduct oneself; to carry out
concentration; focusing; convergence; within a collection of works
lesson; class work; teaching; instruction
annual; yearly; year (e.g. of graduation); nth year (e.g. student); order by year
first; foremost; most important; best; greatest; above all
counter for nights of a stay; overnight stay; lodging
fourth day of the month; four days
deep in the mountains; mountain recesses
study; diligence; discount; reduction
chief; main; principal; major
intensely; severely; strictly; tightly; compactly; closely
to teach thoroughly; to instill (into); to instil; to inculcate; to drum (into); to drill (into)
more or less; though not quite satisfactorily; tentatively; for the time being; just in case; once
participation; joining; entry; adherence
applicant; candidate; person interested in doing something; person wanting to do something; interested party; volunteer
excursion; field trip; school trip
to finish; to end; to merely result in something less severe than expected; to feel at ease; to feel unease or guilt for troubling someone; to be sorry
senior high school; high school
characteristic (of); peculiar (to)
not less than; ... and over; beyond (e.g. one's expectations); above; above-mentioned; aforementioned
honest; frank; candid; honestly; frankly
bothersome; tiresome; bother to do
kindness; intimacy; friendship
declaration; indication; representation; manifestation; demonstration; expression
circumference; girth; surroundings; neighbourhood; people surrounding oneself; surrounding circumstances
topic; subject; much talked about; topical; in the news
to match (rhythm, speed, etc.); to join together; to unite; to face; to be opposite (someone); to compare; to check with
again; once more; also; too; on the other hand; while; and
such; this sort of; like this
time; hour; occasion; case; chance; opportunity
surroundings; environs; circumference
safe (e.g. choice); secure; innocuous; acceptable; passable; satisfactory
three days and three nights